Gaarder, J., Baggethun, K., & Lorenzo, A. (2020). Simplemente perfecto. Siruela.
Chicago Style (17th ed.) CitationGaarder, Jostein, Kirsti Baggethun, and Asunción Lorenzo. Simplemente Perfecto. Madrid: Siruela, 2020.
MLA (9th ed.) CitationGaarder, Jostein, et al. Simplemente Perfecto. Siruela, 2020.
Warning: These citations may not always be 100% accurate.